{"id":"topical-coal-tar","safety":{"commonSideEffects":[{"rate":null,"effect":"Skin irritation"},{"rate":null,"effect":"Photosensitivity"},{"rate":null,"effect":"Staining of skin and clothing"},{"rate":null,"effect":"Folliculitis"},{"rate":null,"effect":"Contact dermatitis"}]},"_chembl":{"chemblId":"CHEMBL2108232","moleculeType":"Unknown"},"_dailymed":null,"mechanism":{"_ai_source":"claude-haiku-4.5","explanation":"Coal tar is a complex mixture of hydrocarbons that penetrates the stratum corneum and reduces epidermal cell turnover, thereby slowing hyperkeratinization. It also possesses antimicrobial properties and reduces itching through local anesthetic effects. The exact molecular mechanisms are not fully elucidated but involve suppression of inflammatory mediators and normalization of abnormal keratinization patterns.","oneSentence":"Coal tar works by reducing skin cell proliferation, decreasing inflammation, and providing antimicrobial and antipruritic effects on the skin surface.","_ai_confidence":"high"},"_scrapedAt":"2026-03-28T00:13:08.649Z","_scrapedBy":"cloudflare-swarm","_wikipedia":null,"indications":{"approved":[{"name":"Psoriasis"},{"name":"Eczema"},{"name":"Seborrheic dermatitis"},{"name":"Lichen planus"},{"name":"Pruritus"}]},"trialDetails":[{"nctId":"NCT06890026","phase":"","title":"Durability of Three Monthly Loading Doses With Faricimab in Treatment-naïve Neovascular Age-related Macular Degeneration","status":"COMPLETED","sponsor":"Rigshospitalet, Denmark","startDate":"2024-11-15","conditions":"Neovascular Age-Related Macular Degeneration (nAMD), Treatment-naïve","enrollment":742},{"nctId":"NCT07353671","phase":"PHASE2, 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Therapy for Management of Post-Extraction Localized Alveolar Osteitis","status":"NOT_YET_RECRUITING","sponsor":"Menoufia University","startDate":"2025-08-01","conditions":"Alveolar Osteitis","enrollment":40},{"nctId":"NCT06753136","phase":"NA","title":"Electrochemotherapy (ECT) in Patients With Primary Visceral Tumors and/or Secondary Visceral Localizations, of Any Histotype","status":"RECRUITING","sponsor":"Istituto Oncologico Veneto IRCCS","startDate":"2025-07-23","conditions":"Primary Visceral Tumors of Any Histotype, Visceral Lesions, Liver Cancer","enrollment":24},{"nctId":"NCT03662685","phase":"PHASE1","title":"Immunogenetic Profiling of Goeckerman Therapy in the Treatment of Psoriasis Vulgaris","status":"TERMINATED","sponsor":"University of California, San Francisco","startDate":"2018-08-01","conditions":"Psoriasis Vulgaris, Psoriasis","enrollment":4},{"nctId":"NCT07088276","phase":"NA","title":"Microneedling Combined With Topical Crisaborole 2 % Ointment in Treatment of Vitiligo.","status":"NOT_YET_RECRUITING","sponsor":"Tanta University","startDate":"2025-08","conditions":"Vitiligo","enrollment":20},{"nctId":"NCT06691269","phase":"NA","title":"Photobiomodulation and Tooth Analgesia","status":"RECRUITING","sponsor":"University of Maryland, Baltimore","startDate":"2025-07-07","conditions":"Dental Anaesthesia, Dental Pain, Dental Analgesia","enrollment":200},{"nctId":"NCT07070024","phase":"PHASE1, PHASE2","title":"Efficacy of Microneedling With Vitamin C in Performing Gingival Depigmentation","status":"NOT_YET_RECRUITING","sponsor":"Fayoum University","startDate":"2025-07","conditions":"Gingival Pigmentation","enrollment":30},{"nctId":"NCT07069686","phase":"NA","title":"US-guided Airway Nerve Block vs. Topical Lidocaine in Video Laryngoscopy for Difficult Bariatric Intubation.","status":"COMPLETED","sponsor":"Ain Shams University","startDate":"2025-02-20","conditions":"Gag 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